Finding the Fourth Proportional to 16,678.53, 25,023.60 and 10,443.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,678.53 : 25,023.60 = 10,443.15 : x
2. Step 2: Convert to fraction form
   16,678.53/25,023.60 = 10,443.15/x
3. Step 3: Cross multiply
   16,678.53x = 25,023.60 × 10,443.15
4. Step 4: Simplify right side
   16,678.53x = 261,325,208.34
5. Step 5: Solve for x
   x = 261,325,208.34/16,678.53
6. Step 6: Final answer
   x = 15,668.36